[linux-dvb] Oops in dvbdmx_release_ts_feed (2.6.4-mm2)

[Tino Keitel <tino.keitel@gmx.de>]

Hi folks,

with the DVB driver in 2.6.4-mm2 for my Hauppauge WinTV Nova-T, I get
the following kernel Oops occasionally:

dvb_demux_feed_del: feed not in list (type=0 state=0 pid=ffff)
Unable to handle kernel paging request at virtual address 36e4c0e4
 printing eip:
f99fce17
*pde = 00000000
Oops: 0002 [#1]
PREEMPT 
CPU:    0
EIP:    0060:[<f99fce17>]    Tainted: P   VLI
EFLAGS: 00210202   (2.6.4-mm2) 
EIP is at dvbdmx_release_ts_feed+0x77/0xc0 [dvb_core]
eax: cfcfcfcf   ebx: f7a58300   ecx: c0412810   edx: c0374fb8
esi: f9a49180   edi: f7a5811c   ebp: 00000002   esp: c36c1e58
ds: 007b   es: 007b   ss: 0068
Process mythbackend (pid: 19463, threadinfo=c36c0000 task=f77786d0)
Stack: f9a49180 00000005 ffffffea f9b4f1f8 f99fa9dc f7a5811c f9a49180 00000005 
       00000002 000000bc 00008000 00000000 00000000 00000000 f9b4f1f8 f99faff9 
       f7a580d0 f9b4f268 f7a5810c f9b4f1f8 f7a580d0 f99fb4f3 f9b4f1f8 f9b4f1f8 
Call Trace:
 [<f99fa9dc>] dvb_dmxdev_filter_start+0x14c/0x3f0 [dvb_core]
 [<f99faff9>] dvb_dmxdev_pes_filter_set+0x49/0xa0 [dvb_core]
 [<f99fb4f3>] dvb_demux_do_ioctl+0x233/0x240 [dvb_core]
 [<f99fdfcb>] dvb_usercopy+0xcb/0x1c0 [dvb_core]
 [<f99f9070>] dvb_device_open+0x0/0x1c0 [dvb_core]
 [<c015b236>] chrdev_open+0xe6/0x210
 [<c0151437>] dentry_open+0x147/0x210
 [<c01512e2>] filp_open+0x62/0x70
 [<f99fb52f>] dvb_demux_ioctl+0x2f/0x40 [dvb_core]
 [<f99fb2c0>] dvb_demux_do_ioctl+0x0/0x240 [dvb_core]
 [<c016424f>] sys_ioctl+0xef/0x2a0
 [<c032340a>] sysenter_past_esp+0x43/0x65

Code: 00 00 00 00 c7 40 74 00 00 00 00 89 34 24 e8 c1 fa ff ff f6 86 68
10 00 00 04 66 c7 86 48 10 00 00 ff ff 74 11 8b 86 6c 10 00 00 <c7> 84
87 8c 00 00 00 00 00 00 00 89 d9 ff 87 e4 01 00 00 0f 8e

The Oops usually occurs sunday evening when watching TV, and doesn't
occur when I try to reproduce it. I'm using MythTV from CVS for this.

I also found a post with the subject "Oops in dvbdmx_release_ts_feed
(2.6.0-test9)", but I can't see an happy end in the corresponding
thread. So, is this a known problem? What could I try to workaround?

Regards,
Tino



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